SLA-35 Pre-Amplifier/Attenuator iPhone MP3 level booster

Stereo level and impedance matching amplifier
Volume distortions or volume losses may occur when connecting smartphones, mobile phones, tablet PCs and MP3 players to an amplifier or a mixer. Due to the correct setting of impedance and gain, the SLA-35 is able to provide a better sound.

  • Adjustable attenuation down to 1/10 (-20 dB) or gain up to 10-fold (+20 dB)
  • Impedance switching Hi/Lo
  • RCA and 3.5 mm stereo inputs and outputs
  • Metal housing
  • Supplied with plug-in PSU


Type converter
Frequency range 3-50,000 Hz
Control range  
Control frequencies  
Input signal 7 V max.
Input sensitivity -
Input impedance 35 kΩ/8.1 kΩ (switch -5.6 dB)
Output signal max. 4.5 V/1.6 kΩ
Output impedance  
Gain 0.1-10 (±20 dB)
continuously adjustable,
additionally -5.6 dB, switchable
Phantom power  
Gate ratio  
Crossover frequency  
High-pass filter  
Low cut  
Transmission ratio  
S/N ratio > 83 dB
Channel separation > 68 dB
THD < 0.03%
Admiss. ambient temp. 0-40 °C
Power supply via suppl. PSU
Dimensions 88 x 37 x 103 mm
Weight 450 g
Inputs 1 x RCA L/R,
1 x 3.5 mm jack
Outputs 1 x RCA L/R,
1 x 3.5 mm jack



SLA-35 Pre-Amplifier/Attenuator iPhone MP3 level booster

    Unit D2 Pandora Business Park
    M24 1RU

    refresh audio visual

    Tel: 0161 637 6544
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